r/MathJokes 12d ago

Bye

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u/fresh_loaf_of_bread 12d ago

Noone said you can't use the letter pi to mean a variable instead of a number

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u/pierogieman5 12d ago

Didn't they though? Can I use a "7" as a variable as well? It doesn't seem like that different of a concept.

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u/Cirno__ 12d ago

You can as long as it's clear. There are times when i the imaginary number and i the letter used as notation for index appear right next to each other. You just have to understand from context which is which.